T45 Retrac Drill Bit – Premium Top Hammer Drilling Tool
Katdrilling Tools officially launches the upgraded 1532-89T45 retrac Drill Bit, a flagship top hammer consumable engineered to resolve stuck-bit and hole-collapse troubles in fractured rock formations. This 89mm T45 threaded retrac bit integrates optimized carbide layout, reinforced alloy body and multi-spec button combinations (211/411/812 configurations), delivering balanced drilling efficiency and long service life for mining, tunneling and civil anchoring projects worldwide.
1. Key Structural & Production Features
- High-strength blank material: whole-forged alloy steel, completed via quenching and tempering to balance surface hardness and internal toughness against impact fracture.
- Optimized retract skirt structure: extra rear row tungsten carbide inserts trim collapsed rock residues during bit withdrawal, smoothing borehole walls effectively.
- Precision CNC thread machining: tight tolerance T45 thread reduces friction loss of impact force and avoids thread peeling under heavy torque.
2. Product Parameter
T45 Thread: 70mm, 76mm, 82mm, 89mm, 102mm, 115mm, 127mm
| button bit(T45) | Carbide dimension | Dimensions D | Flushing hole | |||||
| Gauge | Front | |||||||
| [No.] | [mm] | [No.] | [mm] | [mm] | [in] | Front | Side | |
| Flat Face / Retrac |
|
|
|
|
|
|
|
|
|
| 6 | 12.7 | 3 | 12.7 | 76 | 3" | 3 | 1 |
|
| 6 | 14 | 4 | 14 | 89 | 3 1/2" | 3 | 0 |
|
| 8 | 12.7 | 5 | 10 | 76 | 3" | 4 | 0 |
| 8 | 12.7 | 5 | 12.7 | 89 | 3 1/2" | 4 | 2 | |
|
| 8 | 11 | 6 | 11 | 76 | 3" | 2 | 0 |
| 8 | 12.7 | 6 | 11 | 82 | 3 1/4" | 2 | 0 | |
| 8 | 12.7 | 6 | 12.7 | 89 | 3 1/2" | 2 | 0 | |
| 8 | 14 | 6 | 14 | 102 | 4" | 2 | 1 | |
| 8 | 16 | 6 | 14 | 115 | 4 1/2" | 2 | 0 | |
|
| 8 | 16 | 8 | 14 | 127 | 5" | 2 | 0 |
| Drop Center / Retrac |
|
|
|
|
|
|
|
|
|
| 6 | 11 | 3/1 | 11 / 9.5 | 70 | 2 3/4" | 3 | 0 |
| 6 | 12.7 | 3/1 | 11 / 9.5 | 76 | 3" | 3 | 0 | |
|
| 6 | 14 | 3/2 | 12.7 / 9.5 | 89 | 3 1/2" | 3 | 0 |
|
| 8 | 11 | 4/1 | 10/10 | 76 | 3" | 4 | 0 |
| 8 | 12.7 | 4/1 | 12.7 / 12.7 | 89 | 3 1/2" | 4 | 0 | |
|
| 8 | 11 | 4/2 | 11 / 9.5 | 89 | 3 1/2" | 4 | 1 |
|
| 8 | 14 | 4/3 | 12.7 / 11 | 102 | 4" | 4 | 1 |
| 8 | 14 | 4/3 | 14 / 12.7 | 115 | 4 1/2" | 4 | 0 | |
| 8 | 16 | 4/3 | 16 / 12.7 | 127 | 5" | 4 | 2 | |
3. Main Application Scenarios
- Underground metal & coal mining: medium-depth blast hole drilling, rock bolt anchoring and tunnel development in fragmented mine wall strata.
- Infrastructure tunneling: highway, railway and municipal pipe gallery perimeter hole drilling with frequent broken rock interlayers.
- Open-pit quarrying: medium-depth bench blasting for granite, basalt and other abrasive hard rock.
- Compatible with mainstream jumbo rigs, handheld hydraulic rock drills and top hammer drilling systems across global construction sites.
4. Competitive Core Advantages
Field trials prove the 1532-89T45 retrac drill bit raises average drilling meters per shift and minimizes tool failure rates, becoming a reliable high-efficiency solution for challenging broken-rock top hammer drilling operations.